plz tell ..what are the possible oxidation states of.scandium Share with your friends Share 0 Manoj Kumar answered this Dear Student Scandium has atomic number 21. Its configuration is 1s2 2s2 2p6 3s2 3p6 3d1 4s2. Its oxidation state is +3 (in most of its compounds) and zero (in metallic form). Regards 0 View Full Answer